How to import Big SQL file usign PHP with shell command into hosting server

<?php

error_reporting(E_ALL ^ E_NOTICE);
ini_set('display_errors', 1);
ini_set('memory_limit', '512M');

$dbinfo = array(
    "host" => 'localhost',
    "user" => 'magentom_jaydip',
    "pass" => 'rmO22RQ%UbW0',
    "dbname" => 'magentom_jaydip'
);


// Database Config
$sqlhost = $dbinfo["host"];
$dbuser = $dbinfo["user"];
$dbpassword = $dbinfo["pass"];
$dbname = $dbinfo["dbname"];

// filename
$file = "mg_jaydip.sql";

shell_exec("mysql -u $dbuser --password='$dbpassword' --host='$sqlhost' $dbname < $file");

echo 'Finished!<br/>';
?>

How to clone perticular / specific branch from bitbucket / github

git clone -b branchname https://url@bitbucket.org/jaydip/url.git